oj.uz

Submission #892647

# Submission time Handle Problem Language Result Execution time Memory
892647 2023-12-25T16:07:10 Z seriouslyFlawed Mecho (IOI09_mecho) C++17
44 / 100
 1000 ms 8344 KB 
#pragma GCC optimise("03,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>

using namespace std;

// Shortcuts for common operations
#define pb push_back
#define ppb pop_back
#define f first
#define s second
#define all(x) (x).begin(), (x).end()
#define ll long long
#define endl "\n"

// Type definitions for convenience
typedef vector<int> vi;
typedef vector<bool> vb;
typedef pair<int, int> pii;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef unordered_set<int> usi;
typedef unordered_map<int, int> umii;

// Debugging macros
#define debug(x) cerr << #x << " = " << (x) << '\n'
#define debug_vector(v) _debug_vector(#v, v)
template<typename T>
void _debug_vector(const string& name, const vector<T>& a) {
    cerr << name << " = [ ";
    for(const auto &x : a) cerr << x << ' ';
    cerr << "]\n";
}

// I/O redirection for local testing
#define iofile(io) \
        freopen((io + ".in").c_str(), "r", stdin); \
        freopen((io + ".out").c_str(), "w", stdout);

// delta for floodfill
vi dx = {0, 1, 0, -1};
vi dy = {1, 0, -1, 0};

// extended deltas for floodfill
vi edx = {0, 1, 0, -1, 1, 1, -1, -1};
vi edy = {1, 0, -1, 0, 1, -1, 1, -1};

// Common outputs
void yes() { cout << "YES" << '\n'; }
void no() { cout << "NO" << '\n'; }

// cin.tie(0)->sync_with_stdio(0);

void fx() {
    // Functionality for fx
    int n, k;
    cin >> n >> k;

    vector<string>tab(n);
    vvi bee(n, vi(n, INT_MAX));
    vii hives;
    pii start;

    for(int i = 0; i < n; i++){
        cin >> tab[i];
        for(int j = 0; j < n; j++){
            if(tab[i][j] == 'M') start = {i, j};
            else if(tab[i][j] == 'H') hives.pb({i, j});
        }
    }

    queue<pair<int, pii>>q;
    for(auto &hive: hives){
        q.push({0, hive});
        bee[hive.f][hive.s] = 0;
    }

    while(!q.empty()){
        auto &[t, hive] = q.front();
        q.pop();
        auto &[x, y] = hive;
        
        for(int i = 0; i < 4; i++){
            auto [X, Y] = make_pair(x+dx[i], y+dy[i]);
            if(X >= 0 and X < n and Y >= 0 and Y < n and (tab[X][Y] == 'G' or tab[X][Y] == 'M') and bee[X][Y] > t + 1){
                q.push({t+1, {X, Y}});
                bee[X][Y] = t+1;
            }
        }
    }

    queue<pair<array<int, 3>, pii>>que;
    vector<vi>best(n, vi(n, INT_MIN)); // <- see init.
    que.push({{0, bee[start.f][start.s], k}, {start.f, start.s}}); //<- sure about init?
    best[start.f][start.s] = bee[start.f][start.s];
    int res = INT_MIN;

    while(!que.empty()){
        auto [T, C] = que.front();
        que.pop();
        auto [t, s, steps] = T;
        auto [x, y] = C;

        if(tab[x][y] == 'D') res = max(res, best[x][y]);
        
        for(int i = 0; i < 4; i++){
            auto [X, Y] = make_pair(x + dx[i], y + dy[i]);

            if(X >= 0 and X < n and Y >= 0 and Y < n and tab[X][Y] != 'T' and (bee[X][Y] > (steps?t:t+1)) and best[X][Y] < min(s, bee[X][Y] - (steps?t:t+1))){
                que.push({{(steps?t:t+1), min(s, bee[X][Y] - (steps?t:t+1)), (steps?steps-1:k-1)}, {X, Y}});
                best[X][Y] = max(best[X][Y], min(s, bee[X][Y] -(steps?t:t+1)));
            }
        }
    }

    cout << ((res <= 0)?-1:res-1) << endl;
}

int main() {
    // Uncomment the following lines for file I/O
    // iofile(string("hello"))
    cin.tie(0)->sync_with_stdio(0);

    
    // Uncomment the following lines for multiple test cases
    // int t; cin >> t;
    // while(t--) fx();
    
    // Single test case
    fx();
    
    return 0;
}

Compilation message

mecho.cpp:1: warning: ignoring '#pragma GCC optimise' [-Wunknown-pragmas]
    1 | #pragma GCC optimise("03,unroll-loops")
      |

Subtask #1
44.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Incorrect 0 ms 344 KB Output isn't correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 174 ms 7032 KB Output is correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 1 ms 348 KB Output isn't correct
18 Correct 0 ms 348 KB Output is correct
19 Incorrect 0 ms 348 KB Output isn't correct
20 Correct 1 ms 344 KB Output is correct
21 Incorrect 1 ms 348 KB Output isn't correct
22 Correct 0 ms 348 KB Output is correct
23 Incorrect 1 ms 348 KB Output isn't correct
24 Correct 0 ms 356 KB Output is correct
25 Incorrect 0 ms 356 KB Output isn't correct
26 Correct 0 ms 360 KB Output is correct
27 Incorrect 1 ms 360 KB Output isn't correct
28 Correct 0 ms 360 KB Output is correct
29 Incorrect 1 ms 356 KB Output isn't correct
30 Correct 0 ms 468 KB Output is correct
31 Incorrect 1 ms 352 KB Output isn't correct
32 Correct 0 ms 356 KB Output is correct
33 Incorrect 3 ms 1640 KB Output isn't correct
34 Correct 3 ms 1708 KB Output is correct
35 Correct 176 ms 1936 KB Output is correct
36 Incorrect 3 ms 1884 KB Output isn't correct
37 Correct 4 ms 1888 KB Output is correct
38 Correct 266 ms 2412 KB Output is correct
39 Incorrect 4 ms 2404 KB Output isn't correct
40 Correct 5 ms 2404 KB Output is correct
41 Correct 389 ms 3308 KB Output is correct
42 Incorrect 5 ms 2908 KB Output isn't correct
43 Correct 7 ms 2908 KB Output is correct
44 Correct 534 ms 3712 KB Output is correct
45 Incorrect 6 ms 3420 KB Output isn't correct
46 Correct 8 ms 3304 KB Output is correct
47 Correct 731 ms 4148 KB Output is correct
48 Incorrect 7 ms 3928 KB Output isn't correct
49 Correct 9 ms 3932 KB Output is correct
50 Correct 934 ms 5052 KB Output is correct
51 Incorrect 8 ms 4444 KB Output isn't correct
52 Correct 10 ms 4440 KB Output is correct
53 Execution timed out 1039 ms 5724 KB Time limit exceeded
54 Incorrect 10 ms 5212 KB Output isn't correct
55 Correct 13 ms 5724 KB Output is correct
56 Execution timed out 1040 ms 6268 KB Time limit exceeded
57 Incorrect 11 ms 5976 KB Output isn't correct
58 Correct 14 ms 5980 KB Output is correct
59 Execution timed out 1047 ms 7504 KB Time limit exceeded
60 Incorrect 12 ms 6748 KB Output isn't correct
61 Correct 16 ms 6744 KB Output is correct
62 Execution timed out 1040 ms 8344 KB Time limit exceeded
63 Incorrect 22 ms 6736 KB Output isn't correct
64 Incorrect 36 ms 6744 KB Output isn't correct
65 Incorrect 33 ms 6612 KB Output isn't correct
66 Incorrect 30 ms 6748 KB Output isn't correct
67 Correct 23 ms 6836 KB Output is correct
68 Correct 24 ms 6664 KB Output is correct
69 Correct 30 ms 6852 KB Output is correct
70 Correct 24 ms 6740 KB Output is correct
71 Correct 23 ms 6740 KB Output is correct
72 Correct 26 ms 6748 KB Output is correct
73 Correct 28 ms 6840 KB Output is correct
74 Incorrect 503 ms 7356 KB Output isn't correct
75 Correct 154 ms 7060 KB Output is correct
76 Correct 183 ms 6996 KB Output is correct
77 Correct 171 ms 6988 KB Output is correct
78 Correct 49 ms 7268 KB Output is correct
79 Incorrect 91 ms 6732 KB Output isn't correct
80 Incorrect 51 ms 6892 KB Output isn't correct
81 Correct 30 ms 6744 KB Output is correct
82 Incorrect 55 ms 6736 KB Output isn't correct
83 Correct 70 ms 6920 KB Output is correct
84 Correct 318 ms 7236 KB Output is correct
85 Correct 218 ms 6996 KB Output is correct
86 Correct 216 ms 7432 KB Output is correct
87 Correct 137 ms 6996 KB Output is correct
88 Correct 272 ms 7248 KB Output is correct
89 Correct 542 ms 7436 KB Output is correct
90 Correct 133 ms 6976 KB Output is correct
91 Correct 494 ms 7668 KB Output is correct
92 Correct 324 ms 7544 KB Output is correct